Boffinmum, I once had a mad itailian woman of 23ish, she lasted from monday 10pm until Sat 9am! She did many crazy things in the first few days to make it impossible to stay,.
We live in an old place and despite my pleas re the loo plumbing she shoved a whole wet loo roll down there each day she was here - couldn't get the hang of shutting the glass shower door (not rocket science, standard stuff) and mopped it up each day with a loo roll which she then put in one go into the pan and flushed it.
The day she left I said to DH, she got through 5 loo rolls whilst she was here. We are lucky not to have had a blockage...
Cue 4 days after her departure a soil pipe explosion (had been storing up the solids above the blockage) which then poured down through the family bathroom floor and took out the cielings of the utility room and cloakroom below.
Hair curling enough?
Or
When DD was just 5 and Ds was a babe my Mothers help took them up the road for a walk, pretty usual.
A few weeks later as DD and I were wandering along the lane, over the lvel (train) crossing DD piped up, "When X took us for a walk, when the train came she was one side and I was the other."
She had let DD lag so far behind on the walk (narrow country lane rat run no pavements) that when the single arm (waist high) barrier came down for the train DD was stuck. I thank my lucky stars everytime I cross there that DD didn't panic and run accross.